package com.wencst.server.log;

import java.util.Arrays;
import java.util.Enumeration;

import javax.servlet.http.HttpServletRequest;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

@Aspect
@Configuration
public class Log4JComponent {

    private Logger logger =  LoggerFactory.getLogger(this.getClass());
    ThreadLocal<Long> startTime = new ThreadLocal<Long>();

    

    /**

     * 定义一个切入点.

     * 解释下：

     *

     * ~ 第一个 * 代表任意修饰符及任意返回值.

     * ~ 第二个 * 任意包名

     * ~ 第三个 * 代表任意方法.

     * ~ 第四个 * 定义在web包或者子包

     * ~ 第五个 * 任意方法

     * ~ .. 匹配任意数量的参数.

     */

     @Pointcut("execution(public * com.wencst..*.controller..*.*(..))")

     public void webLog(){}

     

     @Before("webLog()")

     public void doBefore(JoinPoint joinPoint){

            startTime.set(System.currentTimeMillis());

            

           // 接收到请求，记录请求内容

            logger.info("WebLogAspect.doBefore()");

            ServletRequestAttributes attributes =(ServletRequestAttributes) RequestContextHolder.getRequestAttributes();

         HttpServletRequest request = attributes.getRequest();

        

        

      // 记录下请求内容

     logger.info("URL : " + request.getRequestURL().toString());

     logger.info("HTTP_METHOD : " + request.getMethod());

     logger.info("IP : " + request.getRemoteAddr());

     logger.info("CLASS_METHOD : " + joinPoint.getSignature().getDeclaringTypeName()+ "." + joinPoint.getSignature().getName());

     logger.info("ARGS : " + Arrays.toString(joinPoint.getArgs()));

   //获取所有参数方法一：

     Enumeration<String> enu=request.getParameterNames(); 

     while(enu.hasMoreElements()){ 

            String paraName=(String)enu.nextElement(); 

            logger.info(paraName+": "+request.getParameter(paraName)); 

     } 

     }

     

     @AfterReturning("webLog()")

     public void doAfterReturning(JoinPoint joinPoint){

           // 处理完请求，返回内容

            logger.info("WebLogAspect.doAfterReturning()");

            logger.info("耗时（毫秒） : " + (System.currentTimeMillis()- startTime.get()));

     }

     

}